The IcraftingInfo object contains all kinds of information on the crafting process itself:

It might be required to import the class to avoid errors.
import crafttweaker.recipes.ICraftingInventory

ZenGetter
ZenGetter inventory	ICraftingInventory	The inventory the crafting is performed in
ZenGetter player	IPlayer	The player conducting the crafting
ZenGetter dimension	int	The dimension the crafting process is performed in